[picodrive.git] / platform / gizmondo / emu.c

#include <windows.h>
#include <string.h>

#include <sys/stat.h>  // mkdir
#include <sys/types.h>

#include "kgsdk/Framework.h"
#include "kgsdk/Framework2D.h"
#include "kgsdk/FrameworkAudio.h"
#include "../common/emu.h"
#include "../common/lprintf.h"
#include "../common/arm_utils.h"
#include "emu.h"
#include "menu.h"
#include "giz.h"
#include "asm_utils.h"

#include <Pico/PicoInt.h>

#ifdef BENCHMARK
#define OSD_FPS_X 220
#else
#define OSD_FPS_X 260
#endif

// main 300K gfx-related buffer. Used by menu and renderers.
unsigned char gfx_buffer[321*240*2*2];
char romFileName[MAX_PATH];
int engineState;

unsigned char *PicoDraw2FB = gfx_buffer;  // temporary buffer for alt renderer ( (8+320)*(8+240+8) )
int reset_timing = 0;

static DWORD noticeMsgTime = 0;
static int osd_fps_x;


static void blit(const char *fps, const char *notice);
static void clearArea(int full);

void emu_noticeMsgUpdated(void)
{
	noticeMsgTime = GetTickCount();
}

void emu_getMainDir(char *dst, int len)
{
	if (len > 0) *dst = 0;
}

static void emu_msg_cb(const char *msg)
{
	if (giz_screen == NULL)
		giz_screen = Framework2D_LockBuffer();

	memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
	emu_textOut16(4, 232, msg);
	noticeMsgTime = GetTickCount() - 2000;

	/* assumption: emu_msg_cb gets called only when something slow is about to happen */
	reset_timing = 1;
}

static void emu_state_cb(const char *str)
{
	clearArea(0);
	blit("", str);
}

static void emu_msg_tray_open(void)
{
	strcpy(noticeMsg, "CD tray opened");
	noticeMsgTime = GetTickCount();
}


void emu_Init(void)
{
	// make dirs for saves, cfgs, etc.
	mkdir("mds", 0777);
	mkdir("srm", 0777);
	mkdir("brm", 0777);
	mkdir("cfg", 0777);

	PicoInit();
	PicoMessage = emu_msg_cb;
	PicoMCDopenTray = emu_msg_tray_open;
	PicoMCDcloseTray = menu_loop_tray;
}

void emu_Deinit(void)
{
	// save SRAM
	if((currentConfig.EmuOpt & 1) && SRam.changed) {
		emu_SaveLoadGame(0, 1);
		SRam.changed = 0;
	}

	if (!(currentConfig.EmuOpt & 0x20)) {
		FILE *f = fopen(PicoConfigFile, "r+b");
		if (!f) emu_WriteConfig(0);
		else {
			// if we already have config, reload it, except last ROM
			fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);
			fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);
			fseek(f, 0, SEEK_SET);
			fwrite(&currentConfig, 1, sizeof(currentConfig), f);
			fflush(f);
			fclose(f);
		}
	}

	PicoExit();
}

void emu_setDefaultConfig(void)
{
	memset(&currentConfig, 0, sizeof(currentConfig));
	currentConfig.lastRomFile[0] = 0;
	currentConfig.EmuOpt  = 0x1f | 0x600; // | confirm_save, cd_leds
	currentConfig.PicoOpt = 0x0f | 0xc00; // | cd_pcm, cd_cdda
	currentConfig.PsndRate = 22050;
	currentConfig.PicoRegion = 0; // auto
	currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP
	currentConfig.Frameskip = 0;//-1; // auto
	currentConfig.volume = 50;
	currentConfig.KeyBinds[ 2] = 1<<0; // SACB RLDU
	currentConfig.KeyBinds[ 3] = 1<<1;
	currentConfig.KeyBinds[ 0] = 1<<2;
	currentConfig.KeyBinds[ 1] = 1<<3;
	currentConfig.KeyBinds[ 5] = 1<<4;
	currentConfig.KeyBinds[ 6] = 1<<5;
	currentConfig.KeyBinds[ 7] = 1<<6;
	currentConfig.KeyBinds[ 4] = 1<<7;
	currentConfig.KeyBinds[ 8] = 1<<27; // save state
	currentConfig.KeyBinds[ 9] = 1<<28; // load state
	currentConfig.KeyBinds[12] = 1<<29; // vol up
	currentConfig.KeyBinds[11] = 1<<30; // vol down
	currentConfig.PicoCDBuffers = 64;
	currentConfig.scaling = 0;
}


static int EmuScan16(unsigned int num, void *sdata)
{
	if (!(Pico.video.reg[1]&8)) num += 8;
	DrawLineDest = (unsigned short *) giz_screen + 321*(num+1);

	return 0;
}

static int EmuScan8(unsigned int num, void *sdata)
{
	// draw like the fast renderer
	if (!(Pico.video.reg[1]&8)) num += 8;
	HighCol = gfx_buffer + 328*(num+1);

	return 0;
}

static void osd_text(int x, int y, const char *text)
{
	int len = strlen(text) * 8 / 2;
	int *p, h;
	for (h = 0; h < 8; h++) {
		p = (int *) ((unsigned short *) giz_screen+x+321*(y+h));
		p = (int *) ((int)p & ~3); // align
		memset32(p, 0, len);
	}
	emu_textOut16(x, y, text);
}

/*
void log1(void *p1, void *p2)
{
	lprintf("%p %p %p\n", p1, p2, DrawLineDest);
}
*/

short localPal[0x100];
static void (*vidCpy8to16)(void *dest, void *src, short *pal, int lines) = NULL;

static void blit(const char *fps, const char *notice)
{
	int emu_opt = currentConfig.EmuOpt;

	if (PicoOpt&0x10) {
		// 8bit fast renderer
		if (Pico.m.dirtyPal) {
			Pico.m.dirtyPal = 0;
			vidConvCpyRGB565(localPal, Pico.cram, 0x40);
		}
		vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, 224);
	} else if (!(emu_opt&0x80)) {
		// 8bit accurate renderer
		if (Pico.m.dirtyPal) {
			Pico.m.dirtyPal = 0;
			vidConvCpyRGB565(localPal, Pico.cram, 0x40);
			if (Pico.video.reg[0xC]&8) { // shadow/hilight mode
				//vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);
				//vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40); // TODO
				blockcpy(localPal+0xc0, localPal+0x40, 0x40*2);
				localPal[0xc0] = 0x0600;
				localPal[0xd0] = 0xc000;
				localPal[0xe0] = 0x0000; // reserved pixels for OSD
				localPal[0xf0] = 0xffff;
			}
			/* no support
			else if (rendstatus & 0x20) { // mid-frame palette changes
				vidConvCpyRGB565(localPal+0x40, HighPal, 0x40);
				vidConvCpyRGB565(localPal+0x80, HighPal+0x40, 0x40);
			} */
		}
		// TODO...
		vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, 224);
	}

	if (notice || (emu_opt & 2)) {
		int h = 232;
		if (notice)      osd_text(4, h, notice);
		if (emu_opt & 2) osd_text(osd_fps_x, h, fps);
	}
//	if ((emu_opt & 0x400) && (PicoMCD & 1))
//		cd_leds();

}

// clears whole screen or just the notice area (in all buffers)
static void clearArea(int full)
{
	if (giz_screen == NULL)
		giz_screen = Framework2D_LockBuffer();
	if (full) memset32(giz_screen, 0, 320*240*2/4);
	else      memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
}

static void vidResetMode(void)
{
	giz_screen = Framework2D_LockBuffer();

	if (PicoOpt&0x10) {
	} else if (currentConfig.EmuOpt&0x80) {
		PicoDrawSetColorFormat(1);
		PicoScan = EmuScan16;
	} else {
		PicoDrawSetColorFormat(-1);
		PicoScan = EmuScan8;
	}
	if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) {
		// setup pal for 8-bit modes
		localPal[0xc0] = 0x0600;
		localPal[0xd0] = 0xc000;
		localPal[0xe0] = 0x0000; // reserved pixels for OSD
		localPal[0xf0] = 0xffff;
	}
	Pico.m.dirtyPal = 1;

	memset32(giz_screen, 0, 321*240*2/4);
	Framework2D_UnlockBuffer();
	giz_screen = NULL;
}


static void SkipFrame(int do_audio)
{
	PicoSkipFrame=do_audio ? 1 : 2;
	PicoFrame();
	PicoSkipFrame=0;
}

void emu_forcedFrame(void)
{
	// TODO
}

static void updateKeys(void)
{
	unsigned int keys, allActions[2] = { 0, 0 }, events;
	static unsigned int prevEvents = 0;
	int i;

	keys = Framework_PollGetButtons();
	if (keys & BTN_HOME) {
		engineState = PGS_Menu;
		// wait until select is released, so menu would not resume game
		while (Framework_PollGetButtons() & BTN_HOME) Sleep(50);
	}

	keys &= CONFIGURABLE_KEYS;

	for (i = 0; i < 32; i++)
	{
		if (keys & (1 << i)) {
			int pl, acts = currentConfig.KeyBinds[i];
			if (!acts) continue;
			pl = (acts >> 16) & 1;
			/* TODO if (combo_keys & (1 << i)) {
				int u = i+1, acts_c = acts & combo_acts;
				// let's try to find the other one
				if (acts_c)
					for (; u < 32; u++)
						if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {
							allActions[pl] |= acts_c;
							keys &= ~((1 << i) | (1 << u));
							break;
						}
				// add non-combo actions if combo ones were not found
				if (!acts_c || u == 32)
					allActions[pl] |= acts & ~combo_acts;
			} else */ {
				allActions[pl] |= acts;
			}
		}
	}

	PicoPad[0] = (unsigned short) allActions[0];
	PicoPad[1] = (unsigned short) allActions[1];

	events = (allActions[0] | allActions[1]) >> 16;

	// volume is treated in special way and triggered every frame
	if (events & 0x6000) {
		int vol = currentConfig.volume;
		if (events & 0x2000) {
			if (vol < 100) vol++;
		} else {
			if (vol >   0) vol--;
		}
		//gp2x_sound_volume(vol, vol);
		sprintf(noticeMsg, "VOL: %02i", vol);
		noticeMsgTime = GetTickCount();
		currentConfig.volume = vol;
	}

	events &= ~prevEvents;
	//if (events) RunEvents(events); // TODO
	if (movie_data) emu_updateMovie();

	prevEvents = (allActions[0] | allActions[1]) >> 16;
}

static void simpleWait(DWORD until)
{
}

void emu_Loop(void)
{
	//static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;
	char fpsbuff[24]; // fps count c string
	DWORD tval, tval_prev = 0, tval_thissec = 0; // timing
	int frames_done = 0, frames_shown = 0, oldmodes = 0;
	int target_fps, target_frametime, lim_time, tval_diff, i;
	char *notice = NULL;

	lprintf("entered emu_Loop()\n");

	fpsbuff[0] = 0;

	// make sure we are in correct mode
	vidResetMode();
	if (currentConfig.scaling) PicoOpt|=0x4000;
	else PicoOpt&=~0x4000;
	Pico.m.dirtyPal = 1;
	oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
	//find_combos(); // TODO

	// pal/ntsc might have changed, reset related stuff
	target_fps = Pico.m.pal ? 50 : 60;
	target_frametime = (1000<<8)/target_fps;
	reset_timing = 1;

	// prepare sound stuff
/*	if (currentConfig.EmuOpt & 4) {
		int snd_excess_add;
		if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
			sound_rerate(Pico.m.frame_count ? 1 : 0);
		}
		snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
		lprintf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
			PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);
		gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);
		gp2x_sound_volume(currentConfig.volume, currentConfig.volume);
		PicoWriteSound = updateSound;
		memset(sndBuffer, 0, sizeof(sndBuffer));
		PsndOut = sndBuffer;
		PsndRate_old = PsndRate;
		PsndLen_real = PsndLen;
		PicoOpt_old  = PicoOpt;
		pal_old = Pico.m.pal;
	} else*/ {
		PsndOut = 0;
	}

	// prepare CD buffer
	if (PicoMCD & 1) PicoCDBufferInit();

	// loop?
	while (engineState == PGS_Running)
	{
		int modes;

		tval = GetTickCount();
		if (reset_timing || tval < tval_prev) {
			reset_timing = 0;
			tval_thissec = tval;
			frames_shown = frames_done = 0;
		}

		// show notice message?
		if (noticeMsgTime) {
			static int noticeMsgSum;
			if (tval - noticeMsgTime > 2000) { // > 2.0 sec
				noticeMsgTime = 0;
				clearArea(0);
				notice = 0;
			} else {
				int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
				if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
				notice = noticeMsg;
			}
		}

		// check for mode changes
		modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
		if (modes != oldmodes) {
			osd_fps_x = OSD_FPS_X;
			//if (modes & 4)
				vidCpy8to16 = vidCpy8to16_40;
			//else
			//	vidCpy8to16 = vidCpy8to16_32col;
			oldmodes = modes;
			clearArea(1);
		}

		// second passed?
		if (tval - tval_thissec >= 1000)
		{
#ifdef BENCHMARK
			static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
			if(++bench == 10) {
				bench = 0;
				bench_fps_s = bench_fps;
				bf[bfp++ & 3] = bench_fps;
				bench_fps = 0;
			}
			bench_fps += frames_shown;
			sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
#else
			if(currentConfig.EmuOpt & 2)
				sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
#endif
			tval_thissec = tval;

			if (PsndOut == 0 && currentConfig.Frameskip >= 0) {
				frames_done = frames_shown = 0;
			} else {
				// it is quite common for this implementation to leave 1 fame unfinished
				// when second changes, but we don't want buffer to starve.
				if (PsndOut && frames_done < target_fps && frames_done > target_fps-5) {
					updateKeys();
					SkipFrame(1); frames_done++;
				}

				frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;
				frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
				if (frames_shown > frames_done) frames_shown = frames_done;
			}
		}
#ifdef PFRAMES
		sprintf(fpsbuff, "%i", Pico.m.frame_count);
#endif

		tval_prev = tval;
		lim_time = (frames_done+1) * target_frametime;
		if (currentConfig.Frameskip >= 0) // frameskip enabled
		{
			for (i = 0; i < currentConfig.Frameskip; i++) {
				updateKeys();
				SkipFrame(1); frames_done++;
				if (PsndOut) { // do framelimitting if sound is enabled
					int tval_diff;
					tval = GetTickCount();
					tval_diff = (int)(tval - tval_thissec) << 8;
					if (tval_diff < lim_time) // we are too fast
						simpleWait(tval + ((lim_time - tval_diff)>>8));
				}
				lim_time += target_frametime;
			}
		}
		else // auto frameskip
		{
			int tval_diff;
			tval = GetTickCount();
			tval_diff = (int)(tval - tval_thissec) << 8;
			if (tval_diff > lim_time)
			{
				// no time left for this frame - skip
				if (tval_diff - lim_time >= (300<<8)) {
					/* something caused a slowdown for us (disk access? cache flush?)
					 * try to recover by resetting timing... */
					reset_timing = 1;
					continue;
				}
				updateKeys();
				SkipFrame(tval_diff < lim_time+target_frametime*2); frames_done++;
				continue;
			}
		}

		updateKeys();

		if (giz_screen == NULL && (currentConfig.EmuOpt&0x80))
			giz_screen = Framework2D_LockBuffer();
		if (!(PicoOpt&0x10))
			PicoScan((unsigned) -1, NULL);

		PicoFrame();

		if (giz_screen == NULL)
			giz_screen = Framework2D_LockBuffer();

		blit(fpsbuff, notice);

		if (giz_screen != NULL) {
			Framework2D_UnlockBuffer();
			giz_screen = NULL;
		}
		//lprintf("after unlock\n");

		// check time
		tval = GetTickCount();
		tval_diff = (int)(tval - tval_thissec) << 8;

		if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300<<8)) // slowdown detection
			reset_timing = 1;
		else if (PsndOut != NULL || currentConfig.Frameskip < 0)
		{
			// sleep if we are still too fast
			if (tval_diff < lim_time)
			{
				// we are too fast
				simpleWait(tval + ((lim_time - tval_diff) >> 8));
			}
		}

		frames_done++; frames_shown++;
	}


	if (PicoMCD & 1) PicoCDBufferFree();

	// save SRAM
	if ((currentConfig.EmuOpt & 1) && SRam.changed) {
		emu_state_cb("Writing SRAM/BRAM..");
		emu_SaveLoadGame(0, 1);
		SRam.changed = 0;
	}
}


void emu_ResetGame(void)
{
	PicoReset(0);
	reset_timing = 1;
}
Commit	Line	Data
e5f426aa	1	#include <windows.h>
ea8c405f	2	#include <string.h>
e5f426aa	3
2ec14aec	4	#include <sys/stat.h> // mkdir
	5	#include <sys/types.h>
	6
	7	#include "kgsdk/Framework.h"
ea8c405f	8	#include "kgsdk/Framework2D.h"
	9	#include "kgsdk/FrameworkAudio.h"
	10	#include "../common/emu.h"
	11	#include "../common/lprintf.h"
	12	#include "../common/arm_utils.h"
e5f426aa	13	#include "emu.h"
ea8c405f	14	#include "menu.h"
	15	#include "giz.h"
	16	#include "asm_utils.h"
e5f426aa	17
ea8c405f	18	#include <Pico/PicoInt.h>
	19
	20	#ifdef BENCHMARK
	21	#define OSD_FPS_X 220
	22	#else
	23	#define OSD_FPS_X 260
	24	#endif
	25
	26	// main 300K gfx-related buffer. Used by menu and renderers.
	27	unsigned char gfx_buffer[3212402*2];
e5f426aa	28	char romFileName[MAX_PATH];
e5f426aa	29	int engineState;
e5f426aa	30
ea8c405f	31	unsigned char PicoDraw2FB = gfx_buffer; // temporary buffer for alt renderer ( (8+320)(8+240+8) )
e5f426aa	32	int reset_timing = 0;
ea8c405f	33
	34	static DWORD noticeMsgTime = 0;
	35	static int osd_fps_x;
	36
	37
	38	static void blit(const char fps, const char notice);
	39	static void clearArea(int full);
	40
	41	void emu_noticeMsgUpdated(void)
	42	{
	43	noticeMsgTime = GetTickCount();
	44	}
	45
	46	void emu_getMainDir(char *dst, int len)
	47	{
	48	if (len > 0) *dst = 0;
	49	}
	50
	51	static void emu_msg_cb(const char *msg)
	52	{
	53	if (giz_screen == NULL)
	54	giz_screen = Framework2D_LockBuffer();
	55
	56	memset32((int )((char )giz_screen + 3212322), 0, 32182/4);
	57	emu_textOut16(4, 232, msg);
	58	noticeMsgTime = GetTickCount() - 2000;
	59
	60	/* assumption: emu_msg_cb gets called only when something slow is about to happen */
	61	reset_timing = 1;
	62	}
	63
	64	static void emu_state_cb(const char *str)
	65	{
	66	clearArea(0);
	67	blit("", str);
	68	}
	69
	70	static void emu_msg_tray_open(void)
	71	{
	72	strcpy(noticeMsg, "CD tray opened");
	73	noticeMsgTime = GetTickCount();
	74	}
	75
	76
	77	void emu_Init(void)
	78	{
	79	// make dirs for saves, cfgs, etc.
2ec14aec	80	mkdir("mds", 0777);
	81	mkdir("srm", 0777);
	82	mkdir("brm", 0777);
	83	mkdir("cfg", 0777);
ea8c405f	84
	85	PicoInit();
	86	PicoMessage = emu_msg_cb;
	87	PicoMCDopenTray = emu_msg_tray_open;
	88	PicoMCDcloseTray = menu_loop_tray;
	89	}
	90
	91	void emu_Deinit(void)
	92	{
	93	// save SRAM
	94	if((currentConfig.EmuOpt & 1) && SRam.changed) {
	95	emu_SaveLoadGame(0, 1);
	96	SRam.changed = 0;
	97	}
	98
	99	if (!(currentConfig.EmuOpt & 0x20)) {
	100	FILE *f = fopen(PicoConfigFile, "r+b");
	101	if (!f) emu_WriteConfig(0);
	102	else {
	103	// if we already have config, reload it, except last ROM
	104	fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);
	105	fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);
	106	fseek(f, 0, SEEK_SET);
	107	fwrite(&currentConfig, 1, sizeof(currentConfig), f);
	108	fflush(f);
	109	fclose(f);
	110	}
	111	}
	112
	113	PicoExit();
	114	}
	115
	116	void emu_setDefaultConfig(void)
	117	{
	118	memset(&currentConfig, 0, sizeof(currentConfig));
	119	currentConfig.lastRomFile[0] = 0;
	120	currentConfig.EmuOpt = 0x1f \| 0x600; // \| confirm_save, cd_leds
	121	currentConfig.PicoOpt = 0x0f \| 0xc00; // \| cd_pcm, cd_cdda
	122	currentConfig.PsndRate = 22050;
	123	currentConfig.PicoRegion = 0; // auto
	124	currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP
fd34fdd0	125	currentConfig.Frameskip = 0;//-1; // auto
ea8c405f	126	currentConfig.volume = 50;
	127	currentConfig.KeyBinds[ 2] = 1<<0; // SACB RLDU
	128	currentConfig.KeyBinds[ 3] = 1<<1;
	129	currentConfig.KeyBinds[ 0] = 1<<2;
	130	currentConfig.KeyBinds[ 1] = 1<<3;
	131	currentConfig.KeyBinds[ 5] = 1<<4;
	132	currentConfig.KeyBinds[ 6] = 1<<5;
	133	currentConfig.KeyBinds[ 7] = 1<<6;
2ec14aec	134	currentConfig.KeyBinds[ 4] = 1<<7;
ea8c405f	135	currentConfig.KeyBinds[ 8] = 1<<27; // save state
	136	currentConfig.KeyBinds[ 9] = 1<<28; // load state
	137	currentConfig.KeyBinds[12] = 1<<29; // vol up
	138	currentConfig.KeyBinds[11] = 1<<30; // vol down
	139	currentConfig.PicoCDBuffers = 64;
	140	currentConfig.scaling = 0;
	141	}
	142
	143
	144	static int EmuScan16(unsigned int num, void *sdata)
	145	{
	146	if (!(Pico.video.reg[1]&8)) num += 8;
	147	DrawLineDest = (unsigned short ) giz_screen + 321(num+1);
	148
	149	return 0;
	150	}
	151
	152	static int EmuScan8(unsigned int num, void *sdata)
	153	{
	154	// draw like the fast renderer
	155	if (!(Pico.video.reg[1]&8)) num += 8;
2ec14aec	156	HighCol = gfx_buffer + 328*(num+1);
ea8c405f	157
	158	return 0;
	159	}
	160
	161	static void osd_text(int x, int y, const char *text)
	162	{
499a0be3	163	int len = strlen(text) * 8 / 2;
499a0be3	164	int *p, h;
ea8c405f	165	for (h = 0; h < 8; h++) {
	166	p = (int ) ((unsigned short ) giz_screen+x+321*(y+h));
	167	p = (int *) ((int)p & ~3); // align
499a0be3	168	memset32(p, 0, len);
ea8c405f	169	}
	170	emu_textOut16(x, y, text);
	171	}
	172
499a0be3	173	/*
	174	void log1(void p1, void p2)
	175	{
	176	lprintf("%p %p %p\n", p1, p2, DrawLineDest);
	177	}
	178	*/
ea8c405f	179
	180	short localPal[0x100];
	181	static void (vidCpy8to16)(void dest, void src, short pal, int lines) = NULL;
	182
	183	static void blit(const char fps, const char notice)
	184	{
	185	int emu_opt = currentConfig.EmuOpt;
	186
	187	if (PicoOpt&0x10) {
	188	// 8bit fast renderer
	189	if (Pico.m.dirtyPal) {
	190	Pico.m.dirtyPal = 0;
	191	vidConvCpyRGB565(localPal, Pico.cram, 0x40);
	192	}
2ec14aec	193	vidCpy8to16((unsigned short )giz_screen+3218, PicoDraw2FB+328*8, localPal, 224);
ea8c405f	194	} else if (!(emu_opt&0x80)) {
	195	// 8bit accurate renderer
	196	if (Pico.m.dirtyPal) {
	197	Pico.m.dirtyPal = 0;
	198	vidConvCpyRGB565(localPal, Pico.cram, 0x40);
2ec14aec	199	if (Pico.video.reg[0xC]&8) { // shadow/hilight mode
ea8c405f	200	//vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);
ea8c405f	201	//vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40); // TODO
2ec14aec	202	blockcpy(localPal+0xc0, localPal+0x40, 0x40*2);
ea8c405f	203	localPal[0xc0] = 0x0600;
	204	localPal[0xd0] = 0xc000;
	205	localPal[0xe0] = 0x0000; // reserved pixels for OSD
	206	localPal[0xf0] = 0xffff;
	207	}
	208	/* no support
	209	else if (rendstatus & 0x20) { // mid-frame palette changes
	210	vidConvCpyRGB565(localPal+0x40, HighPal, 0x40);
	211	vidConvCpyRGB565(localPal+0x80, HighPal+0x40, 0x40);
	212	} */
	213	}
	214	// TODO...
2ec14aec	215	vidCpy8to16((unsigned short )giz_screen+3218, PicoDraw2FB+328*8, localPal, 224);
ea8c405f	216	}
	217
	218	if (notice \|\| (emu_opt & 2)) {
	219	int h = 232;
	220	if (notice) osd_text(4, h, notice);
	221	if (emu_opt & 2) osd_text(osd_fps_x, h, fps);
	222	}
	223	// if ((emu_opt & 0x400) && (PicoMCD & 1))
	224	// cd_leds();
	225
ea8c405f	226	}
	227
	228	// clears whole screen or just the notice area (in all buffers)
	229	static void clearArea(int full)
	230	{
	231	if (giz_screen == NULL)
	232	giz_screen = Framework2D_LockBuffer();
	233	if (full) memset32(giz_screen, 0, 3202402/4);
499a0be3	234	else memset32((int )((char )giz_screen + 3212322), 0, 32182/4);
ea8c405f	235	}
	236
	237	static void vidResetMode(void)
	238	{
499a0be3	239	giz_screen = Framework2D_LockBuffer();
499a0be3	240
ea8c405f	241	if (PicoOpt&0x10) {
	242	} else if (currentConfig.EmuOpt&0x80) {
	243	PicoDrawSetColorFormat(1);
	244	PicoScan = EmuScan16;
	245	} else {
499a0be3	246	PicoDrawSetColorFormat(-1);
ea8c405f	247	PicoScan = EmuScan8;
ea8c405f	248	}
499a0be3	249	if ((PicoOpt&0x10) \|\| !(currentConfig.EmuOpt&0x80)) {
ea8c405f	250	// setup pal for 8-bit modes
	251	localPal[0xc0] = 0x0600;
	252	localPal[0xd0] = 0xc000;
	253	localPal[0xe0] = 0x0000; // reserved pixels for OSD
	254	localPal[0xf0] = 0xffff;
	255	}
	256	Pico.m.dirtyPal = 1;
499a0be3	257
499a0be3	258	memset32(giz_screen, 0, 3212402/4);
ea8c405f	259	Framework2D_UnlockBuffer();
	260	giz_screen = NULL;
	261	}
	262
	263
	264	static void SkipFrame(int do_audio)
	265	{
	266	PicoSkipFrame=do_audio ? 1 : 2;
	267	PicoFrame();
	268	PicoSkipFrame=0;
	269	}
	270
	271	void emu_forcedFrame(void)
	272	{
	273	// TODO
	274	}
	275
	276	static void updateKeys(void)
	277	{
2ec14aec	278	unsigned int keys, allActions[2] = { 0, 0 }, events;
	279	static unsigned int prevEvents = 0;
	280	int i;
	281
	282	keys = Framework_PollGetButtons();
	283	if (keys & BTN_HOME) {
	284	engineState = PGS_Menu;
	285	// wait until select is released, so menu would not resume game
	286	while (Framework_PollGetButtons() & BTN_HOME) Sleep(50);
	287	}
	288
	289	keys &= CONFIGURABLE_KEYS;
	290
	291	for (i = 0; i < 32; i++)
	292	{
	293	if (keys & (1 << i)) {
	294	int pl, acts = currentConfig.KeyBinds[i];
	295	if (!acts) continue;
	296	pl = (acts >> 16) & 1;
	297	/* TODO if (combo_keys & (1 << i)) {
	298	int u = i+1, acts_c = acts & combo_acts;
	299	// let's try to find the other one
	300	if (acts_c)
	301	for (; u < 32; u++)
	302	if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {
	303	allActions[pl] \|= acts_c;
	304	keys &= ~((1 << i) \| (1 << u));
	305	break;
	306	}
	307	// add non-combo actions if combo ones were not found
	308	if (!acts_c \|\| u == 32)
	309	allActions[pl] \|= acts & ~combo_acts;
	310	} else */ {
	311	allActions[pl] \|= acts;
	312	}
	313	}
	314	}
	315
	316	PicoPad[0] = (unsigned short) allActions[0];
	317	PicoPad[1] = (unsigned short) allActions[1];
	318
	319	events = (allActions[0] \| allActions[1]) >> 16;
	320
	321	// volume is treated in special way and triggered every frame
	322	if (events & 0x6000) {
	323	int vol = currentConfig.volume;
	324	if (events & 0x2000) {
	325	if (vol < 100) vol++;
	326	} else {
	327	if (vol > 0) vol--;
	328	}
	329	//gp2x_sound_volume(vol, vol);
	330	sprintf(noticeMsg, "VOL: %02i", vol);
	331	noticeMsgTime = GetTickCount();
	332	currentConfig.volume = vol;
	333	}
	334
	335	events &= ~prevEvents;
	336	//if (events) RunEvents(events); // TODO
	337	if (movie_data) emu_updateMovie();
	338
	339	prevEvents = (allActions[0] \| allActions[1]) >> 16;
ea8c405f	340	}
	341
	342	static void simpleWait(DWORD until)
	343	{
	344	}
	345
	346	void emu_Loop(void)
	347	{
	348	//static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;
	349	char fpsbuff[24]; // fps count c string
	350	DWORD tval, tval_prev = 0, tval_thissec = 0; // timing
	351	int frames_done = 0, frames_shown = 0, oldmodes = 0;
	352	int target_fps, target_frametime, lim_time, tval_diff, i;
	353	char *notice = NULL;
	354
	355	lprintf("entered emu_Loop()\n");
	356
	357	fpsbuff[0] = 0;
	358
	359	// make sure we are in correct mode
	360	vidResetMode();
	361	if (currentConfig.scaling) PicoOpt\|=0x4000;
	362	else PicoOpt&=~0x4000;
	363	Pico.m.dirtyPal = 1;
	364	oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
	365	//find_combos(); // TODO
	366
	367	// pal/ntsc might have changed, reset related stuff
	368	target_fps = Pico.m.pal ? 50 : 60;
	369	target_frametime = (1000<<8)/target_fps;
	370	reset_timing = 1;
	371
	372	// prepare sound stuff
	373	/* if (currentConfig.EmuOpt & 4) {
	374	int snd_excess_add;
	375	if (PsndRate != PsndRate_old \|\| (PicoOpt&0x0b) != (PicoOpt_old&0x0b) \|\| Pico.m.pal != pal_old) {
	376	sound_rerate(Pico.m.frame_count ? 1 : 0);
	377	}
	378	snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
	379	lprintf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
	380	PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);
	381	gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);
	382	gp2x_sound_volume(currentConfig.volume, currentConfig.volume);
	383	PicoWriteSound = updateSound;
	384	memset(sndBuffer, 0, sizeof(sndBuffer));
	385	PsndOut = sndBuffer;
	386	PsndRate_old = PsndRate;
	387	PsndLen_real = PsndLen;
	388	PicoOpt_old = PicoOpt;
	389	pal_old = Pico.m.pal;
	390	} else*/ {
	391	PsndOut = 0;
	392	}
	393
	394	// prepare CD buffer
	395	if (PicoMCD & 1) PicoCDBufferInit();
	396
	397	// loop?
	398	while (engineState == PGS_Running)
	399	{
	400	int modes;
	401
	402	tval = GetTickCount();
	403	if (reset_timing \|\| tval < tval_prev) {
404	reset_timing = 0;
405	tval_thissec = tval;
406	frames_shown = frames_done = 0;
407	}
408
409	// show notice message?
410	if (noticeMsgTime) {
411	static int noticeMsgSum;
412	if (tval - noticeMsgTime > 2000) { // > 2.0 sec
413	noticeMsgTime = 0;
414	clearArea(0);
415	notice = 0;
416	} else {
417	int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
418	if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
419	notice = noticeMsg;
420	}
421	}
422
423	// check for mode changes
424	modes = ((Pico.video.reg[12]&1)<<2)\|(Pico.video.reg[1]&8);
425	if (modes != oldmodes) {
426	osd_fps_x = OSD_FPS_X;
427	//if (modes & 4)
428	vidCpy8to16 = vidCpy8to16_40;
429	//else
430	// vidCpy8to16 = vidCpy8to16_32col;
431	oldmodes = modes;
432	clearArea(1);
433	}
434
435	// second passed?
436	if (tval - tval_thissec >= 1000)
437	{
438	#ifdef BENCHMARK
439	static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
440	if(++bench == 10) {
441	bench = 0;
442	bench_fps_s = bench_fps;
443	bf[bfp++ & 3] = bench_fps;
444	bench_fps = 0;
445	}
446	bench_fps += frames_shown;
447	sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
448	#else
449	if(currentConfig.EmuOpt & 2)
450	sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
451	#endif
452	tval_thissec = tval;
453
454	if (PsndOut == 0 && currentConfig.Frameskip >= 0) {
455	frames_done = frames_shown = 0;
456	} else {
457	// it is quite common for this implementation to leave 1 fame unfinished
458	// when second changes, but we don't want buffer to starve.
459	if (PsndOut && frames_done < target_fps && frames_done > target_fps-5) {
460	updateKeys();
461	SkipFrame(1); frames_done++;
462	}
463
464	frames_done -= target_fps; if (frames_done < 0) frames_done = 0;
465	frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
466	if (frames_shown > frames_done) frames_shown = frames_done;
467	}
468	}
469	#ifdef PFRAMES
470	sprintf(fpsbuff, "%i", Pico.m.frame_count);
471	#endif
472
473	tval_prev = tval;
474	lim_time = (frames_done+1) * target_frametime;
475	if (currentConfig.Frameskip >= 0) // frameskip enabled
476	{
477	for (i = 0; i < currentConfig.Frameskip; i++) {
478	updateKeys();
479	SkipFrame(1); frames_done++;
480	if (PsndOut) { // do framelimitting if sound is enabled
481	int tval_diff;
482	tval = GetTickCount();
483	tval_diff = (int)(tval - tval_thissec) << 8;
484	if (tval_diff < lim_time) // we are too fast
485	simpleWait(tval + ((lim_time - tval_diff)>>8));
486	}
487	lim_time += target_frametime;
488	}
489	}
490	else // auto frameskip
491	{
492	int tval_diff;
493	tval = GetTickCount();
494	tval_diff = (int)(tval - tval_thissec) << 8;
495	if (tval_diff > lim_time)
496	{
497	// no time left for this frame - skip
498	if (tval_diff - lim_time >= (300<<8)) {
499	/* something caused a slowdown for us (disk access? cache flush?)
500	* try to recover by resetting timing... */
501	reset_timing = 1;
502	continue;
503	}
504	updateKeys();
505	SkipFrame(tval_diff < lim_time+target_frametime*2); frames_done++;
506	continue;
507	}
508	}
509
510	updateKeys();
511
499a0be3	512	if (giz_screen == NULL && (currentConfig.EmuOpt&0x80))
ea8c405f	513	giz_screen = Framework2D_LockBuffer();
499a0be3	514	if (!(PicoOpt&0x10))
499a0be3	515	PicoScan((unsigned) -1, NULL);
ea8c405f	516
ea8c405f	517	PicoFrame();
499a0be3	518
	519	if (giz_screen == NULL)
	520	giz_screen = Framework2D_LockBuffer();
	521
ea8c405f	522	blit(fpsbuff, notice);
	523
	524	if (giz_screen != NULL) {
	525	Framework2D_UnlockBuffer();
	526	giz_screen = NULL;
	527	}
fd34fdd0	528	//lprintf("after unlock\n");
ea8c405f	529
	530	// check time
	531	tval = GetTickCount();
	532	tval_diff = (int)(tval - tval_thissec) << 8;
	533
	534	if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300<<8)) // slowdown detection
	535	reset_timing = 1;
	536	else if (PsndOut != NULL \|\| currentConfig.Frameskip < 0)
	537	{
	538	// sleep if we are still too fast
	539	if (tval_diff < lim_time)
	540	{
	541	// we are too fast
	542	simpleWait(tval + ((lim_time - tval_diff) >> 8));
	543	}
	544	}
	545
	546	frames_done++; frames_shown++;
	547	}
	548
	549
	550	if (PicoMCD & 1) PicoCDBufferFree();
	551
	552	// save SRAM
	553	if ((currentConfig.EmuOpt & 1) && SRam.changed) {
	554	emu_state_cb("Writing SRAM/BRAM..");
	555	emu_SaveLoadGame(0, 1);
	556	SRam.changed = 0;
	557	}
	558	}
	559
	560
	561	void emu_ResetGame(void)
	562	{
	563	PicoReset(0);
	564	reset_timing = 1;
	565	}
e5f426aa	566